Aya Tsuji(辻 彩Tsuji Aya) is a supporting character featured in Diamond Is Unbreakable. She features centrally in the arc Yukako Yamagishi Dreams of Cinderella and in a key role at the finale of Sheer Heart Attack. She is the manager of and sole aesthetician in the Cinderella beauty salon. When Yukako Yamagishi enters her salon, Aya modifies her face to be more attractive. Yoshikage Kira later uses her to change his face.